问题
选择题
There is ____ "s"and ____ "u"in the word "bus".[ ]
A. an; a
B. an; an
C. a; a
D. a, an
答案
答案：A
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There is ____ "s"and ____ "u"in the word "bus".[ ]
A. an; a
B. an; an
C. a; a
D. a, an
答案：A